The Telford Tempest 200 Litre Indirect Unvented Hot Water Cylinder (TSMI200) is designed for homes and properties with moderate hot water demands. Manufactured from Duplex 2304 stainless steel, this indirect unvented cylinder combines durable construction and corrosion resistance with efficient hot water storage for domestic and light commercial applications.
Designed for use with indirect heating systems such as gas or oil boilers, the Telford Tempest 200L features a high-performance coil for rapid heat recovery and high-density polyurethane insulation to minimise heat loss. With a C energy efficiency classification, 33-minute reheat time and a lifetime cylinder shell warranty, it provides a practical hot water solution for medium-sized households.
200L Capacity
Indirect Unvented
Duplex 2304 Stainless Steel
ERP Rating C
Applications & suitability
Medium-Sized Homes
The 200-litre capacity is suited to homes and properties with moderate hot water demands.
Gas & Oil Boiler Systems
Designed for indirect heating systems using compatible gas or oil boilers.
Light Commercial Applications
Suitable for light commercial installations requiring a 200-litre indirect unvented cylinder.
Energy-Efficient Hot Water Storage
High-density polyurethane insulation helps minimise standing heat loss during hot water storage.
Key specifications
| Model |
TSMI200 |
| Nominal Capacity |
200 litres |
| Height |
1150mm |
| Diameter |
580mm |
| Empty Weight |
46kg |
| Full Weight |
240kg |
| Standing Heat Loss |
1.85 kWh/24h |
| Reheat Time |
33 minutes |
| Operating Pressure |
3 bar |
| Maximum Supply Pressure |
12 bar |
| Immersion Heater Rating |
3kW, 240V |
| Connections |
22mm compression |
| Cylinder Material |
Duplex 2304 stainless steel |
| Insulation |
High-density polyurethane |
| Safety Features |
T&P relief valve, thermostat pocket |
| Energy Efficiency Class |
C |
Installation & compatibility
The Telford Tempest TSMI200 is an indirect unvented hot water cylinder designed for compatible gas or oil boiler heating systems. It features 22mm compression connections for installation and includes a 3kW, 240V immersion heater, T&P relief valve, thermostat pocket and WRAS-approved components. The cylinder operates at 3 bar with a maximum incoming supply pressure of 12 bar.
Design & performance benefits
Duplex 2304 Stainless Steel
Manufactured from premium Duplex 2304 stainless steel for durable construction and corrosion resistance.
Rapid Heat Recovery
The high-performance coil provides a stated reheat time of 33 minutes from 10°C to 60°C.
High-Density Insulation
High-density polyurethane insulation helps reduce standing heat loss, specified at 1.85 kWh/24h.
200-Litre Storage
The 200-litre nominal capacity provides hot water storage for medium-sized households and light commercial applications.
Additional installation features
3kW Immersion Heater
A 3kW, 240V immersion heater provides an additional electric heating option.
Safety Components
Includes a 1/2" 7-bar T&P relief valve and thermostat pocket, along with WRAS-approved components.
Long-Term Warranty
Supplied with a lifetime warranty on the cylinder shell and 2-year warranty on components.
Ideal for
The Telford Tempest 200L Indirect Unvented Hot Water Cylinder is ideal for medium-sized households, residential properties and light commercial applications with moderate hot water requirements. Its Duplex 2304 stainless steel construction, 200-litre capacity, 33-minute reheat time, high-density polyurethane insulation and 3kW immersion heater make it a practical solution for indirect hot water systems using compatible gas or oil boilers.
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🆓 Free Local Delivery (Orders £100 & above)
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Customers can also choose to collect their order from our store in
Reading, UK, at no additional charge. For any questions regarding shipping, please contact our support team at online@getplumb.co.uk.
